<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
    </ul>

<script>
    
    var searchInsert = function(nums, target) {
        if(nums.indexOf(target)==-1){
            nums.push(target)
            nums.sort()
        }
            return nums.indexOf(target)
        };
        var nums = [3,5,7,9,10]
var target = 8
console.log(searchInsert(nums,target))

</script>
</body>

</html>